Elastic-plastic analysis of limit pressure and angular velocity of hollow circular cylinders

• Main Authors: Lee,Kun Yu, 李坤昱
• Other Authors: Leu,Shyue Yuh
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/51789858092391021154

碩士 === 中華技術學院 === 飛機系統工程研究所 === 96 === The paper presents the elastic-plastic analysis of limit pressure and angular velocity of thick-walled hollow circular cylinders of the von Mises model with nonlinear isotropic strain hardening and strain-rate sensitivity. The computer code ABAQUS is adopted to deal with the nonlinear plane-strain problem by choosing the displacement/velocity control as the numerical strategy for limit pressure, and angular velocity to be a objective value as numerical strategy for limit angular velocity. Particularly, the problem concerned features in the interaction between strengthening and weakening behavior during the deformation process. The strengthening behavior is resulted from the material hardening properties. And the weakening phenomenon is corresponding to the strain-rate sensitivity during the widening deformation. Finally, validation of the present investigation is confirmed by good agreement between the numerical results and analytical solutions available in literature.